Paper-carriage mechanism



A. PENTECOST.

PAPER CARRIAGE MECHANISM. APPLICATION FILED JUNE 25.1920.

Patented NOV. 14, 1922.

5 SHEETSSHEET L |NVENTOR w M ATTORNEY A. PENTECOST.

PAPER CARRIAGE MECHANISM.

APPLlCATlON FILED JUNE 25,1920.

Patented Nov. 14, 1922.

5 $HEETSSHEEI 2.

I ATTORNEY A. PENTECOSI. PAPER CARRIAGE MECHANISM.

APPLICATION FILED JUNE 25,1920. 1,435,493, Patented Nov. 14, 1922.

- INVENTOR flzfln BY 2 AZORNEY A. PENTECOSTQV PAPER CARRIAGE MECHANISM.

APPLICATION HLED JUNE 25 1920.

9 n w w a A v w W a 4 8 mm a y 5 5 1; 0 6 a N A T R .6 M A. m mE J m w z5 2 M J H 6 a 2 m m7 m w m e m 4 M 2 m am 2 m y W 4 H m 9 6 o M, A I 2 mw 4 F n L @VENTOR' I ATTORNEY A. PENTECOST.

PAPER CARRIAGE MECHANISM.

APPLICATION FILED JUNE 25. I920.

l j fiQQW Patented Nov. 14, 1922.

UNITED STATES PATENT OFFICE.

ARTHUR PENTECOST, OF NEW YORK, N. Y., ASSIGNOR T0 WALES ADDING MACHINECOMPANY, OF WILKES-BARBIE, PENNSYLVANIA, A CORPORATION OF PENNSYL-VANIA.

PAPER-CARRIAGE MECHANISM.

Application filed June 25, 1920.

To (1 whom it may concern:

Be it known that I. ARTHUR PEXTECOST, a subject of the King of England,residing at Xew York city. New York County. New York, have invented newand useful Improvements in Paper-Carriage Mechanisms, of which thefollowing is a specification.

More particularly. this invention is directed to improvements in returnmechanisms for the paper carriages of calculating machines. whereby thepaper carriage is mechanically restored, either to the beginning of anew line. or to another column in the same line which has passed theprinting point.

()ne of the objects of this invention is to provide a carriage-returningmechanism wherein wear of the parts is materially reduced.

This is effected by arranging that the drive mechanism for returning thecarriage to the beginning of a line shall be normally idle. and onlybrought into use at such times as the operator desires to shift thecarriage.

Another object is to facilitate the ready engagement and disengagementof the separable members by meansof which. power is imparted to thecarriage-return mechanism, to thereby reduce wear to a minimum andrender the mechanism more silent in operation.

This result is accomplished by effecting the engagement of the separabledrive and driven members through positively operating means. and byarranging for their quick disconnection by tensioned means instantlyeffective upon the withdrawal of the posi tive means which causes theengagement of the separable members. 7

Furthermore. the separable members are each provided with spiral threadsadapted to lead the members into mesh with each other. so that in theremote event that the engaging mechanism should only partially efi'ectthe engagement of the separable members. the latter will automaticallybecome fully engaged. due to the lead of the intermeshing threads.

Another object of the invention is to prevent mismanipulation of thepaper carriagereturning mechanism. to which end. the operators key orlever does not directly control the means for effecting the engagementSerial No. 391,714.

of the separable members, and hence the operator may not eitheraccidentally or intentionally maintain a partial engagement only of theseparable members, which would result in an unpleasant chattering noiseand injury to the parts. I

Still another object is to effect the automatic disconnection of thepower and the carriage-restoring mechanism at the point of completerestoration of the carriage to the beginning of a line, to thereby avoidinjury to the mechanism, in case the operator should intentionally orunintentionally retain the operating key or lever in actuated positionafter the carriage has reached the limit of its return travel.

A further object is to enable the operator, by the manipulation of asingle key or lever to determine whether the carriage shall return tothe beginning of a line, or shall ='return to any intermediate point atthe will of the operator.

Still further objects are the provision of novel line space mechanism toautomatically advance the paper as the carriage restores to thebeginning of a line, such line spacing mechanism becoming operative whenthe carriage has but partly returned; and the provision of cushioning orshock-absorbing means to reduce the jar incident to the contact of thetabulating stops on the paper carriage with the arresting abutment, suchcushioning means being of material advantage when the operator effectsthe disconnection of the clutch members prior to the completerestoration of the carriage to the beginning of a line, as whenadditional amounts are to be printed in columns which have previouslyfed past the printing point.

These and other objects and advantages will be hereinafter more fullyreferred to and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side view of a portion ofthe well-known Vales motor-driven calculating machine, showing the lefthand end of the paper carriage. to which one embodiment of my inventionis applied;

Figure 2 is a rear view, parts being omitted. the carriage-returningmechanism being in its normal idle position;

Figure 3 is a detail top'plan view of the carriage-controlled means toeffect the a utomatic disconnection of the separable members, in the actof effecting such disconnection' Figure 4 is a top plan view, partly insection, illustrating one means to control the separable members; themechanism being in normal idle position;

Figure'5 is a detail sectional plan of the separable members andoperating parts in idle position;

Figure 6 is a top plan view, partly in section, showing the positionsassumed by the controlling mechanism for the separable mechanism whentripped;

Figure 7 is a detail sectional planof the separable members andoperating parts in active position; and

Figure 8 is a side view of a Vales machine illustrating the dual meansthrough which the engaging mechanism for the separable members is causedto operate.

The invention is applicable to traveling paper carriages adapted to beshifted in letter or column spacing direction, and returnable toward thebeginning of a line. I have illustrated one embodiment of my invention,applied to the well-known Vales motor-driven calculating machine, a morecomprehensive understanding of which may be had by an inspection of U.S. atents to Wales 797,032, August 15, 1905; i cFarland 842,232, January29, 1907; Wilgus, 1,150,916, August 24, 1915, and Pentecost, 1,223,419,April 24, 1917, for example.

Such machines include'a base 969, Figure 8, supporting side framesbetween which the calculating and printing mechanisms are mounted. Amain drive shaft 200 is mounted in the side frames (not shown). A case1065 encloses the operating parts. A carriage bracket 2067 is supported.by and extends transversely across the rear end of the machine, thebracket including ways or rails 2067 on which travels a carriage slide2065. End plates 2010 secured to the carriage slide 2065 support aplaten axle 2004 on which is mounted the platen 2094. A ribbon case orhousing 1810 containing the ribbon mechanism, is removably mountedbetween the platen and the types (not shown).

The paper carriage is drawn from right to left in ,the usual manner, bya spring drum 2068, (Figs. 2 and 8), the tape 2099 of which is connectedto the carriage slide 2065 at any suitable point.

Tabulating stops 1 on a tabulating bar 2 extending between and journaledat its opposite ends in the end plates 2010, are

adapted to successively contact a flexible abutment 2024 (Fig. 2) toarrest the carriage at various columnar positions along its path oftravel. The abutment forms part of a carriage escapement whereby the carriage may be automatically stepped from 'be adjustable along the bar 2as illustrated in such patents. In the present instance, the abutment2024 is the pawl '(Fig. 2) of an escapement, such pawl being pivoted at3 on a sliding plate 2024 spanning the space between the rails 2067 andguided on studs 2055 projecting from the respective rails 2067*. Adisabling spring 4 attached to one arm of the pawl tends to shift thetooth of the pawl out of the path of the tabulating stops 1. Contact ofa tabulating stop 1 with the tooth of the pawl or flexible abutment 2024turns the latter in a clockwise direction (looking from the rear)against the tension of the disabling spring 4, until the pawl isarrested by the contact of its arm 2024, with a stop stud 5 on thesliding plate 2024 at which time, the tooth of the pawl lies squarelyacross the path of the tabulating stop 1 to arrest farther travel of thecarriage under the influence of the spring drum 2068.

It will be understood that, in the particular class of machines inconnection with which I have illustrated this embodiment of myinvention, the keys 117 (Fig. 8) corresponding to the amount to beregistered and listed, in an adding operation, are depressed after whichthe main drive shaft 200 is actuated to effect the registration andlisting of the amount.

By utilizing the main drive shaft 200 to control the column spacing ortabulating action of the paper carriage, amounts can be -more quicklylisted in a horizontal line, or

" drive rack 1668, so that by depressing the starting key, the motordrives the main shaft 200 on its forward stroke and is thenautomatically disconnected therefrom to enable the main drive spring 285connected to the main drive shaft to return the shaft 200 and connectedparts to their normal positions of rest.

For a more complete understanding of this m'echamsm, reference ismade-to U. S.

patents to Kuntzler, 1,151,803, August 31, 1915; \Vilgus, 1,150,916,August 24, 1915, anclzHunter and Kuntzler, 1,225,960, May 15, 191

The control of the carriage tabulating mechanism from the main driveshaft, may be conveniently effected as follows:

Links 214 connect cranks 212 on the main drive shaft 200 with a swingingframe common to the Wales machine, comprising radius bars 323 journaledon a cross shaft 300 and joined by parallel cross rods or braces 302 and303, the rear ends of the links 214 being connected to the cross rod303, to enable the main drive shaft 200 to swing the frame. The usualWales thrust bar 2026, whose forward end is connected to the cross rod302, extends rearwardly through the back of the machine, and carries ayoke 6 embracing the wrist 7 (Figs. 1, 2 and 8) of a crank arm 8 mountedon a: crank shaft 9 journaled in ears 10 in a bracket 11 secured to theback of the machine. A strut 12 depending from the sliding escapementplate 2024 rests 'on the wrist 13 of a second crank arm 14 on the crankshaft 9, the arm 14 lying at an angle to the arm 8. The strut 12 isyieldingly held in contact with the wrist 13 by a flexible link orspring 15 which connects the sliding plate 2024 with the crank arm 14.

The main drive shaft 200, on its forward stroke, swings the cross bar302 forwardly and advances the thrust bar 2026 with its yoke 6 to turnthe crank shaft 9 and lower the crank arm 14. The sliding plate 2024carrying the pawl 2024 follows the crank arm 14 downwardly by gravity,assisted by the spring 15, to withdraw the tooth of the pawl abutment2024 from the path of the tabulating stop 1 at that time in contact withthe pawl.

In addition to the yielding abutment 2024 the sliding plate 2024 carriesa fixed pallet 16 (Fig. 2), the left hand face of which (looking fromthe rear) lies substantially in line with the contact face of the toothof the pawl, and just above the path of travel of the tabulating stops1, when the parts are in their normal positions.

As the sliding escapement plate 2024 descends, and prior to thedisengagement of the yielding pawl 2024 from the adjacent tabulatingstop 1, the plate inter-poses the fixed pallet 16 into the path of theadjacent'stop 1 to retain the carriage against advancing in columnspacing direction during the forward stroke of the main drive shaft.

As soon as the pawl or abutment 2024 escapes the adjacent tabulatingstop 1, the spring 4 connected to the pawl, rocks the latter in acounter-clockwise direction (lookingfrom the rear) to displacethe,,tooth of (as viewed in Fig. 2).

the pawl relatively to the adjacent tabulating stop, the carriage atthat time being held stationary by the fixed pallet 16.

The printing mechanism operates near the end of the forward stroke ofthe main drive shaft 200, after which, the carriage may be fed orallowed to escape to the next column in the following manner. The maindrive shaft 200, on its return stroke, operates through the links 214and the swinging frame 323, 302, 303 to force the thrust bar 2026 andits yoke 6 rearwardly, thereby turning the crank shaft 9 to raise arm 14and the sliding escapement plate 20245 As the escapement plate ascends,it displaces the fixed pallet 16 from in front of the adjacenttabulating stop 1, and the spring 4 having rocked the pawl or flexibleabutment 2024 so that its tooth no longer lies adjacent the fixed pallet16, the tabulating stop 1 escapes past the flexible abutment and thespring drum 2068 is free to draw the carriage in column spacingdirection.

However, the continued travel of the sliding escapement plate 2024immediately introduces the end of the tooth of the flexible abutment2024 into the path of the succeeding tabulating stop 1, which, on thefarther travel of the carriage, contacts the abutment and turns it inclockwise direction (viewing Fig. 2) until the arm 2024 of the abutmentstrikes the stop stud 5, at which time the paper carriage is arrestedwith the succeeding column positioned at the printing line.

The impact of the successive tabulating stops 1 against the flexibleabutment 2024 under the influence of the spring drum 2068 and theconsequent arrest of the comparatively heavy paper carriage, wouldimpart a considerable jar and shock to the machine, to reduce which Ipreferably permit the tabulating bar 2 to have a slight amount ofendwise play in the end plates 2010, the extent of which play is limitedby the contact of the ends of the bar against the end frames 2010. Oneend of a cushioning device, as a spring 17 (Fig. 2), is attached to thetabulating bar 2 intermediate its ends, the opposite end of thecushioning device being secured to the adjacent end plate 2010, tonormally hold the tabulating bar 2 at the extreme right hand limit ofits travel The carriage, in traveling in column spacing direction (fromleft to right looking from the rear, as in Fig. 2) will impinge its stop1 against the flexible abutment 2024 whereupon a slight relativemovement will occur between, the tabulating bar 2 and the paper carriageagainst the tension of the cushioning device 17 which will thus absorbthe greater portion of the shock and jar incident to the arrest of thecarriage, and then reassert itself against the influence of the springdrum 2063 to restore the tabulating bar 2 and carriage to their normalrelative positions.

Successive operations of the main drive shaft 201) will automaticallyfeed the carriage step by step in column spacing direction. until itreaches the end of the line.

It then becomes necessary to return the carriage part way or entirely toits opposite limit of travel, depending upon whether a new line is to becommenced intermediate the left and right hand margins. or at the lefthand margin.

To automatically return the carriage from any point which it may havereached in its column spacing travel. to a preceding point, or to thebeginning of a new line. I provide carriage-returning mechanism toconnect the motor 1690, which operates the main drive shaft 200. withthe carriage.

Heretofore. in many instances the carriage-restoring mechanism has beenconnected with the continuously running motor to be driven thereby aslong as the motor remains operative. and is therefore, subjected to avast amount of unnecessary wear, as the carriage-return mechanism isbrought into use intermittently, that is, only when it is desired torestore the carriage towards the beginning of a line.

My invention is designed to provide a novel and simple means toeliminate this unnecessary and useless wear and thereby greatly prolongthe life of the mechanism and reduce its liability to get out of orderand the necessity of replacing worn parts.

Therefore. I extend the armaturecarrying shaft 18 (Figs. 1 and 2) of themotor rearwardly, and apply thereto a worm 19, forming one of twocoacting separable members. The extended motor shaft 18 with its worm19, projects over or within a housing or other suitable support 20. Asupport or plate 21 is slidably mounted in the housing in any convenientmanner, as by a pin and slot connection 22, for movement transversely tothe axi of the motor shaft. The lower end of a carriage return shaft 23is provided with a step bearing 21 (Fig. 2) in the shiftable support 21and carries a worm wheel 25 adapted to releasably mesh with the worm 19on the motor shaft 18, and constituting the remaining separable member.The carriage return shaft 23 extends iipwardly through a guide bracket26 mounted on the rear of the calculating machine, and car ries a gear27 in constant mesh with a rack 28 supported by brackets 29 projectingfrom the carriage slide 2065.

A spring 30 (Figs. 5 and 7) connected to the housing 20 and totheshiftable plate 21, respectively, tends to hold the worm wheel 25apart from and out of mesh with its worm 19. This spring constitutes a.disengaging means for the separable members 19 and It will be noted thatnormally. the worm wheel 25 is out of mesh with its worm 19, and as aconsequence. the carriage return mechanism is not at such times, drivenby the motor. Hence unnecessary wear is eliminated. 0f course. thecarriage return shaft 23 rotates idly as the carriage shifts from columnto column. due to the constant engagement of the carriage rack 28 withthe pinion 26.

Engagement of the worm wheel 25 with its worm 19 will enable therotatable motor shaft 18 to turn the carriage return shaft 23 andthrough the gear 27 and rack 28, to drive the carriage to the right (theleft, viewing Figs. 2, 1 and 6) towards the beginning of a line.

To effect such connection of the separable members 19 and 25, I providean engaging element in the form of a cam 31 fast near the lower end of acontrol shaft 32, arranged substantially parallel with the motor shaft18, the lower end of which control shaft 32 passes; through a slot 33(Figs. 5 and 7) in the sliding plate 21 and has a step bearing in thebottom of the housing 20. The .control shaft 32 with'the pin 22, servesto guide the shiftable plate 21 in its travel. The face of the cam 31 iadapted to wipe against a roller stud or toe 31 mounted on the slidingplate 21, and the cam face may terminate in an abrupt rise 35 which, bycontact with the toe 31. arrests the travel of the cam in one direction.

The control shaft 32 extends upwardly through the guide bracket 26 whichserves as a bearing therefor, and at its upper end, carries a trip arm36 fast thereon, adapted to enter the path of travel of a tappet 37mounted at'or near one end of the carriage return rack 28.

Rotation of the control shaft 32 in clockwise direction (Fig. 5) wipesthe cam 31 against the toe 31 to crowd the sliding plate 21 to the right(in said figure) against the tension of the disengaging spring 30, toshift the carriage return shaft 23,, and engage the worm wheel 25 withthe worm 19. The spiral thread on the worm 19, when the worm wheel 25 ispartially meshed there- ,with, tends to lead the worm wheel intocomplete mesh. and it will be observed thatthe engaging element 31 actsto positively enforce the connection of the separable members 19 and 25.

The engaging element 31 might be shifted to effective position by othermeans, but in the present instance, I have shown a manually-operablemeans to initiate the operation of mechanism by which the engagement ofthe separable members 19 and 25 is effected.

Such manually-operable means is so arranged that the operator has onlyan indirect control of the engaging element 31 when the latter is to beshifted to effective position, in order to prevent accidental orintentional mismanipulation of the engaging element 31, whereby thelands of the spiral teeth might be brought to and held in contact, tothe injury and possible breakage of the parts.

Furthermore, it is sometimes advantageous in the interest of savingtime, to provide dual means whereby to initiate the operation of thecarriage-return mechanism, one of which means can be located at or nearthe front of the machine, another being located at the rear of themachine adjacent the paper carriage where it will be convenient foroperation as the operator completes the removal of a ledger'sheet fromthe machine, after having made the desired entries thereon. By thisarrangement, the carriage-return mechanism can be restoring the carriageto the beginning of a line, while the operator is filing the ledgersheet away, and selecting the next ledger sheet to be inserted in thepaper carriage.

In ledger posting, it is customary to list at the left hand the oldbalance, shift the carriage to bring the next column to the printingline, list the debits if any, tabulate the carriage to the next column,and list the credits, after which the carriage shifts to the nextcolumn, in which the new balance is printed. In banking, several columnsmay be assigned to the debit items, which may be the amounts ofindividual checks, and in case a greater number of checks are to belisted than there are columns appropriated therefor, it is necessary torestore the carriage from the last debit column partway towards thebeginning of the line to bring the first of the debit columns to theprinting point, whereby to start a new' line of debit entries.

WVith my invention, the operator can at will, initiate or interrupt thereturn travel of the carriage at any point in its path of travel, to.accommodate the carriage to the exigencies of the particular work beingdone.

Pursuant to these ends, I provide an operable member, as a link 38(Figs. 1, 4, 6 and 8) extending along the base 969 of the machine fromfront to rear, the rear end of the link'projecting beyond the base andbeing slotted, as at 39, (Fig. 1) to accommodate the outer end of anactuating lever 40, the hub 40 of which is loosely journaled on thecontrol'shaft 32, adjacent an arm 41, which may take the form of asegmental plate, fast on the control shaft 32. A check stud 42 on thearm 41 limits the travel of the actuating lever 40 towards or over thearm, to

arrest the actuating lever in its home position. The travel of the arm41 is, in turn,

controlled by the arc of travel of the engaging element 31.

A dog 43 pivotally mounted at 44 on the actuating lever 40, releasablyengages a keeper 45 carried by the arm 41, whereby to enable theactuating lever 40 to turn the control shaft 32. in one direction only,and cause the engaging element 31 to effect the engagement of the drivenseparable member 25 with the separable driving member 19.

A spring 46 connected at its opposite ends to the dog 43 and to ananchor post 47 on the actuating lever 40, tends to enforce theengagement of the dog with its keeper 45.

A drivin means, as a. spring 48. is utilized to shift the actuatinglever 40, and consequently, the engaging element 31 to effectiveposition, such drive spring 48 being conveniently mounted. on the rearend of the operable member or link 38 between the outer end of theactuating lever40 and a. cross stud 49 mounted in the operable member.The drive spring 48, when energized, is superior to the disengagingspring 30 and the friction caused by the contact of the cam 31 with thetoe 34.

A key or hand lever 50 (Fig. 8) in the form of a bell crank is pivotedat 51- within the case 1065, one arm of the hand lever being articulatedwith the operable member or trip link 38, the opposite arm of the leverconveniently projecting forwardly through a slot 52 in the front end ofthe case and being equipped with a handle for operation.

A second handle 53 (Figs. 1. 2 and 8) pivoted intermediate its ends at54, to the machine and loosely connected. preferably by the cross stud49, to the operable member or trip link 38, extends upwardly to a pointadjacent the left hand side of the carriage to facilitate the operationof the engaging member 31 by the operator just as he removes the workfrom the machine. The handle or key 50 or 53 constitutes the actuatingmeans for the operable member or trip link 38.

The indirect control of the engaging ele ment 31 by the operable memberor trip link 38 whereby mismanipulation is prevented, is arranged asfollows.

-Rocking the hand lever 50 downwardly, or the handle 53 forwardly,thrusts the operable member or trip link 38 rearwardly relatively to theactuating lever 40, the operable member or trip link shifting relativelyto the actuating lever due to its slotted connection 39 therewith. Thecross stud 49 in the operable member or trip link 38 tends to press thedrive spring 48 against the actuating lever 40, and obviously, if norestraint is provided, as soon as sufficient power is stored in thedrive spring 48 to overcome the disengaging spring 30 and the inertiaand friction of the parts, the drive spring 48 would rock theactuating'lever 40 to operate the engaging element 31.

To prevent such quasi-control of the engaging element 31 by the operablemember or trip link 38, I preferably releasably lock the actuating lever40 in its normal idle position by means of a catch or detainer 55 (Figs.4' and 6) pivoted at 56, to the actuating lever 40, and extendingforwardly through a guide slot 57 (Fig. 2) in the base 969 of themachine to take over a keeper 58 mounted on the base 969. A spring 59connected at its opposite ends to the catch 55 and to the actuatinglever 40, respectively, tends to maintain the catch in yieldingengagement with its keeper58.

The catch 55 restrains the actuating lever 40 against shifting theengaging element 31 to effective position as the operable member 38travels rearwardly, and as a result, power is gradually stored in thedrive spring 48 until it is sufficiently strong to snap the engagingelement 31 smartly to its effective position, to engage the separablemembers 19 and 25.

As this stage is reached, a trip finger 60 conveniently mounted on theshifting operable member or trip link 38 to travel therewith, contacts acam face 61 on the catch or detainer 55 to disengage the latter from itskeeper 58. and thereby free the actuating lever 40 and its connectedparts to the action of the drive spring 48.

The drive spring thereupon rocks the actuating lever 40 independently ofthe operable member or trip link 38, towards the outer end of the slot39 formed therein, and through the releasable dog 43 and keeper 45,turns the arm 41 and control shaft 32 to wipe the engaging element 31along the toe 34 and thereby shift the slide 21 to bring the member orworm wheel 25 into mesh with the drive worm 19, against the tension ofthe disengaging spring 30. Contact of the abrupt cam rise 35 against thetoe 34 arrests and maintains the parts in effective position.

Engagement of the separable members 19 and assuming the motor 1690 to berunning, enables the motor to drive the carriage return shaft 23 and thegear 27 in mesh with the rack 28, to restore the carriage towards thebeginning of a line.

It will be noted that the foregoing arrangement absolutely precludes thepossibility of mismanipulation of the engaging element 31 by theoperator.

The actuating lever 40 normally lies near the outer end of the slot 39in the operating member or trip link 38. The trip link, when operated byeither of the handles 50 or 53. shifts its slot 39 rearwardly relativelyto the actuating lever, but immedituating lever 40 under the control ofthe operator directly through the levers 50 and 53 and the trip link 38.This enables the operator at will to swing the engaging element 31 toits inefl'ective position, by the contact of the actuating lever 40 withthe check stud 42 on the arm 41', and'thereby permits the disablingspring 30 to effect the disengagement of the separable members andinterrupt the return travel of the carwf riage at any point. Suchinterruption may occur at' any time, and by the manipulation of eitherhandle, though the operator-will find the hand lever 50 more,conveniently situated for this purpose.

When the operator desires to return the carriage partway only to thebeginning, of a line, he will rock the hand lever 50 downwardly, and thedrive spring 48 will effect the engagement of the separable members,whereupon the carriage will start its return travel. The operator, bywatching the progress of the columns past the printing point, candetermine when the column in which he wishes to print the next item, hasreturned to the printing point, at which time he will raise the handlever 50, thereby advancing the trip'link 38, which draws the actuatinglever 40 forwardly to withdraw the engaging element 31 to itsineffective position and thereby free the sliding plate 21 for operationby the disengaging spring 30 to disconnect the separable members 1'.)and 25. The flexible abutment 2024 yields against the tension of itssprin 4 in a counter-clockwise direction (viewed from the rear) topermit the passage of the successive tabulating stops 1 as the carriagereturns towards the beginning of a line.

The suspension of the transmission of power to the carriage on itsreturn, may occur when none of the tabulating stops 1 are closelyadjacent the left side (viewed from the rear) of the tooth of theabutment, but the carriage feed spring 2068 will draw the carriage incolumn-spacing direction until ,arrested by contact of the nearesttabulating stop 1 with the abutment 2024 i The cam face 61 on thedetainer or catch 55, with which the trip finger 60 cooperates torelease the catch, is of sufficient extent to maintain contact with, the'kleeper 58 when the catch is released, so as to guide the catch back toits effective position upon the return of the actuating lever 40 tonormal, under the control of the operator through the trip link 38, orautomatically as hereinafter-set forth.-

The trip finger 60 is Withdrawn from its proximity to the cam face 61 asthe operable member or trip link 38 advances to its normal position,whereby to enable the catch 55 to engage its keeper 58 under theinfluence of its spring 59.

Rocking the handle lever 53 rearwardly from its actuated position willeffect the interruption of the carriage return travel in the same manneras does the hand lever 50.

However, it is customary in ledger posting work for the operator to pullthe lever 53 forwardly to start the carriage on its return, and whilethe carriage is returning to the beginning of a line, the operator filesaway the previously printed card and selects the next card to beinserted about the platen.

To effect the automatic disconnection of the motor 1690 and thecarriage-returning means,.when the carriage reaches the beginning of aline, I provide the carriage-return rack 28 with the tappet 37 locatedat or near the right hand end' of the rack (looking from the rear, as inFigs. 1, 2, 4 and 6). As the carriage arrives at the beginning of aline, the tappet 37 collides with the trip arm 36 fast on the upper endof the .control'shaft 32, to turn the shaft in a counter-clockwisedirection and thereby swing the engaging element 31 to its idleposition, to free the shiftable separable member 25 to the action of thedisengaging means or spring 30.

The consequent separation of the sep arable members 25, 19, interruptsthe transmission of power from the motor to the drive gear 27, andpermits the carriage feed spring 2068 to reassert itself and draw thecarriage in column spacing direction until the first active tabulatingstop 1 contacts the abutment 2024.

It might be possible for the operator, either intentionally orunintentionally, to interfere with the automatic shifting of thedisengaging element 31 to its ineffective position, by continuing tohold the handle 50 depressed or the handle 53 forward after the carriagereaches the beginning of a line, which would maintain the operablemember or trip link 38 in its rearward position.

To prevent such mismanipulation, an automatically operated means isprovided for releasing the actuating lever 40 from control of theengaging element. Thus, a releasing arm 62 having a lip 63 thereon, isfast to the upper end of a hollow shaft or sleeve 64 (Figs 1 and 2)encircling the upper part of the control shaft 32. The releasing arm 62extends into the path of return of the tappet 37 which is adapted tocollide therewith just prior to its contact with the trip arm 36, andturn the sleeve in counter-clockwise direction. The lower end of thehollow shaft or sleeve 64 rests loosely upon the hub 40 (see Fig. 2) ofthe actuating lever 40, which hub, in turn, rests loosely upon and issupported by the hub 41 of the segmental plate or arm- 41 secured to thecontrol shaft 32. A releasing cam 65 fast onthe hollow shaft or sleeve64, extends over the plate or arm 41 and lies adjacent a releasing stud66 cam, and a spring 68 connected to the camv and to the anchor postnormally holds the cam 65 at one end of its travel, with the releasingarm 62 in the path of the tappet 37, and near one end of such path.

In case the operator, after actuating the handle 50 or 53, releasescontrol of the same by removing his hand therefrom, the carriage on itsreturn, will cause its tappet 37 to contact the release arm 62 to turnthe hollow shaft 64 and the release cam 65 counterclockwise, against thetension of the spring 68, thereby causing the cam to wipe over thereleasing stud 66 on the dog 43 to disengage the dog from its keeper 45.

The carriage immediately thereafter brings its tappet 37 into contactwith the trip arm 36 to turn the latter and the control shaft 32. andthereby shift the engaging element 31 to its ineffective position.

The tappet 37 in turning the trip arm 36.

continues to turn the release arm 62. and the spring 68 acting as aflexible link between the actuating lever 40 and the release cam 65will, in the absence of restraint imposed by the operator, cause thereturn of the actuating lever 40, and catch 55, to normal position, theactuating lever being pressed against its check stud 42 so that the dog43 lies in position to take over its keeper 45, although disengagedtherefrom. The actuating lever. on its return, will restore theoperating member or trip link 38 and the levers 50 and 53 to normal.

As soon as the power is disconnected from the carriage-return mechanism,the carriage with its rack 28, moves slightly towards the right (inFigs. 3, 4 and 6) as the first active tabulating stop contacts theflexible abutment 2024", thereby withdrawing the tappet 37 on the rack28 from proximity to the trip arm 36, and release arm 62, which latter,under the influence of the tensioned spring 68. turns in a clockwisedirection. to its normal position, the spring also swinging the releasecam 65 to idle position to permit the dog 43 to reengage its keeper 45.

Assume. however, that the operator maintains control of the operablemember or trip link'38 to prevent its return, together with theactuating lever 40, catch 55 and dog 43, to normal position, when thecarriage arrives at the beginning of ajine. The tappet 37 ontherarriage, after first actuating the release arm\ 62 to cast off thedog 43 from its keeper 45. will, in its farther travel, during which itacts upon the trip arm 36, merely turn the release cam a little fartherin its counter-clockwise travel and further tension spring 68.

The arm 41. being disconnected from the actuating lever 40, will swingin a counterclockwise direction under the pressure of the tappet againstthe trip arm 36, relatively to the dog 43 to shift the keeper 45 awayfrom the dog. as the engaging element 31 is restored to idle position.Hence, the operator cannot prevent the disconnection of thecarriage-returning mechanism from the motor when the carriage reachesthe beginning of a line. as the connection between the actuating lever40. trip link 38 and hand lever 50 or 53. with the arm 41 is completelybroken.

Upon the advance of the carriage in colunm spacing direction at thebeginning of a line to take up the slight space between the firsttabulating stop 1 and the flexible alJ11t111e11t2024 ,as aboveexplained, the spring 68 restores the release arm 62 and release cam 65to normal, thereby freeing the dog 43 to the action of its spring 46,but the keeper 45 having shifted beyond the dog 43, the operator. inorder to reestablish his indirect control of the engaging element 31, isforced to manually restore the hand lever 50 or 53 to normal position,such restoration of the hand lever, returning the operable member ortrip link 38, actuating lever 40, catch 55 and dog 43 to normal.

It is desirable that the operator be relieved from the necessity ofmanually operating the line spacin mechanism to turn'the platen 2094 andfeed the paper forward to the next line. E

Therefore, as a convenient means for' au v tomatica'lly effecting linespacing, during the return of the carriage to the be in of a line, Iprovide a feed pawl 69 (Fi 1) pivoted at 70 to a supporting bell era 71,one arm of which is pivoted at 72 to the left hand end frame 2010 of thecarriage. A spring 73 connected to a rearward extent sion on the feedpawl 69 and to a hunt stud 74 mounted on the depending arm of thesupporting bell crank 71 and passlng through a slot 75 in the feed pawl,tends to advance the tooth of the pawl towards a line space ratchet 76at the left hand end?) of the platen 2094, the ratchet 76 being adaptedto turn with the platen.

The lower arm of the feed pawl 69 is formed with a cam 7T,the low faceof which normally lies against a control post 78 projecting laterallyfrom the. adjacent end plate 2010.

A headed guide stud 79 passes through a slot 80 in the supporting bellcrank 71, to limit the rocking of the latter. The bell crank alsocarries a horn 81 preferably equipped with a roller 82 extending overand adapted to ride along the upper carriage rail 2067". When, intraveling in column spacing direction, the left hand end of the carriagepasses the left hand end of the carriage rail 2067', the roll 82 ridesofl the rail, and the supporting bell crank lever 71 with its feed pawl69 drops to its lowest position, in which it is held by the contact ofthe upper end wall of the slot 80 with the stud 79, which locates theupper toothed end of the feed pawl 69 somewhat below the horizontalcenter of the line space ratchet 76 preparatory to taking a new bite onthe ratchet. The spring 73 draws the tooth of the pawl towards theratchet until the pawl isjarrested by contact of the inner end wall of-itseslot 75 with the post 74. The feed pawl, 69, in dropping to itslower position, shifts'the high face of its cam 77 below the controlstud 78 against which the low face of the cam is pressed y the Springenablegthis movementof the feed pawl to efle'ctive position.

IThe carriage, upon its return towards the be inning of a line, causesthe roll 82 to ri' ej-np an inclined face 83 formed on the en'dliof theupper carriage rail 2067 m to rock the supporting bell crank 71upwardly, the

/the. feed pawl 69 out of engagement with thexratchet, against thetension of the spring 7 3, the stud 74 traversing the slot- 75- to itsouter or rear end where it remains until the roll 82 again rides off therail 2067".

,Operation of the machine to accumulate and print an amount set up onthe keyboard at a time when the carriage is being restored towards thebeginning of a line,

would blur the imprint and locate it out of line with previously printedamounts of a similar character, to prevent the possibility vof which, Iprovide an interlock between the starting key 966 (Fig. 8) and theoperable member or link 38.

To this end, I provide the lever 50 with a laterally projectin lug 84located adjacent the arm 916 (s own and described in U. S. patent toWilgus 1,150,916, August 24, 1915. where it is given reference numeral50) fast on the shaft 900 (referred to as 27 in the above-mentionedpatent) and forming a part of theusual Wales construction.

A lateral ear 85 on the arm 916" normally lies just in front of the lug84.

Depression of the starting key 966 rocks cross shaft 900counter-clockwise to introduce the ear 85 beneath the lever 50, andthereby block the operation of either lever 50 or 53 controlling theoperating member or trip link 38, while the starting key remainsdepressed. V

Rocking either lever 50 or 53 will interpose the lug 84 in the path ofthe ear 85 to lock the starting key out of operation.

The releasable connection between the actuating lever 40 and the controlshaft 32, as well as the automatic or carriage-controlled releasemechanism for such connection, is more particularly covered in aseparate application, filed November 2, 1920, Serial No. 421,332.

Changes may be made in the form and arrangement of the several partswithout departing from the spirit and scope of this invention.

What I claim as new, is

1. The combination with a traveling paper carriage, and a motor havingashaft; of mechanism to return the carriage towards the beginning of aline, including a carriagereturn shaft; separable drive and drivenmembers mounted directly upon the motor shaft and carriage-returnshafts, respectively, against axial travel relatively thereto, theseparable members bein normally disengaged to permit the carriage-returnmechanlsm to remain at rest; and means to positively engage anddisengage the separable members.v

2. The combination with a traveling paper carriage, and a motor having ashaft; of mechanism to return the carriage towards the beginnin of aline, including a carriagereturn shaft; separable drive and drivenmembers mounted directly upon the motor shaft and carriage-returnshafts, respectively, against axial travel thereto, the'separablemembers being normally disengaged to permit the carriagereturn mechanismto remain at rest; & shiftable bearing by which the carriage-returnshaft is supported for lateral movement; and means to shift the bearingin opposite directions to engage and disengage the separable members.

3. The combination with a traveling paper carriage, and a motor having ashaft; of mechanism to return the carriage towards the beginning of aline, including a carria ereturn shaft; a shiftable bearing in which oneend of the carriage-return shaft is rotatably stepped; separable driveand driven members mounted on the motor shaft and on the-carriage-return shaft, respectively; a spring operable upon theshlftable bearing relatively to shift the latter and the carriage-returnshaft in a direction to disengage the separable members, and normallyhold them disengaged; and means operating upon the bearing to positivelyshift it and the carriage-return shaft in the opposite direction againstthe tension of the spring, to engage the se arable members.

4. T e combination with a traveling paper carriage; and a motor having ashaft; of mechanism to return the carriage towards the beginning of aline, including a carriage return'shaft extendn motor shaft; a shifta 1esupport in which one end of the carriage-return shaft is rotatablystepped; separable clutch members secured, respectively, to the motorshaft and carriage-return shaft; means to shift the support in adirection to disengage the separable members; a toe on the shiftablesupport; and'a cam member operable upon the toe to positively shift thesupport in the opposite direction, to engage the separable members.

5. The combination with a traveling paper carriage; and a motor having ashaft; of mechanism to return the carriage towards the beginning of aline, including a carriagereturn shaft; separable members, respectivelyconnected with themotor shaft and the carriage-return shaft; meansnormally tend ing to maintain the separable members disengaged; anengaging element to positively enforce the engagement of the separablemembers against the influence of the disengaging means; operable meanshaving a loose connection with the engaging element, to prevent directoontrol of the latter by the operable means to engage the separablemembers; drive means actuated by the operable means to shift theengaging element to effective position; a catch to restrain the actionof the drive means until such time as sufiicient power is accumulated tooperate the engaging element; and a trip means controlled by theoperable means to release the catch when the drive means is sufficientlypowerful to operate the engaging element.

6. The combination with a traveling aper carriage; and a motor having asha of mechanism to return the carriage towards the beginning of a line,including a carriagereturn shaft; separable members, respectivelyconnected with the motor shaft and the carriage-return shaft; meansnormally tending to maintain the separable members disengaged; anengaging element to positively enforce the engagement of the separablemembers against the influence of the disengaging means; a drive meansfor the engaging element; a manually-operable-means to store power inthe drive means; a releasable catch to delay the operation of the drivemeans; and a trip member actuated by the manually-operable means torelease the at an angle to the catch and free the drive means foroperation.

'7. The combination with a traveling paper carriage; and a motor havinga shaft; of mechanism to return the carriage towards the beginning of aline, including a carriagereturn shaft; separable members, respectivelyconnected with the motor shaftand the carriage-return shaft; meanstending to disengage the separable members; an engaging element topositively enforce the engagement of the separable members; a drivemeans for the engaging element; an actuating-lever connected with theengaging element, and operated in one direction by the drive means toshift the engaging element to effective position; meansmanually-operable in opposite directions and having a limited movementrelatively to the actuating lever,

the manually-operable means, when shifted in one direction, adapted tostore power in the drive means; a releasable catch to retain theactuating lever in normal idle position; and a trip member actuated bythe operable means to release the catch when the drive means issufliciently powerful to operate the actuating lever and engagingelement.

8. The combination with a traveling paper carriage; and a motor having ashaft; of mechanism to return the carriage towards the beginning of aline, including a carriagereturn shaft; separable members, respectivelyconnected with the motor shaft and the carriage-return shaft; meanstending to disengage the separable members; an engaging element topositively enforce the engagement of the separable members; drive meansto shift the engaging element to effective position;operable means forthe drive means, and having a limited movement relatively to theengaging element, to eliminate direct control of the engagement of theseparable members by the operator; a releasable catch to preventoperation of the engaging element; and trip means controlled by theoperable means to release the catch.

9. The combination with a traveling paper carriage; and a motor having ashaft; of mechanism to return the carriage towards the beginning of aline including a carriagereturn shaft; separable members, respectivelyconnected with the motor shaft and the carriage-return shaft; meanstending to disengage the separable members; an engaging elementtopositively enforce the en gagement of the separable members; drivemeans to shift the engaging element to effective position; andmeansoperable in one direction to actuate the drive means, and having aloose connection with the engaging element whereby to shift the latterto inbe effective position when operated in the op posite direction.

'10. The combination with a traveling paper carriage; and a motor havinga shaft;

memes of mechanism to return the carriage towards the beginning of aline, including a carriagereturn shaft; separable members, respec-'tively connected with the motor shaft and the carriage-return shaft;means tending to disengage the separable members; an engaging element topositively enforce the engagement of the separable members; drive meansto shift the engaging element to effective position; means operable inone direction to actuate the drive means, and having a loose connectionwith the engaging element whereby to shift the latter to ineffectiveposition when operated in the opposite direction; andcarriage-controlled means to release the separable members to the actionof their disengaging means irrespective of the operable means.

11. The combination with a traveling paper carriage; and a motor havinga shaft; of means to return the carriage towards the beginning of aline, including normallyseparated drive and driven members; a normallyidle engaging element to positively enforce the engagement of theseparable members; an operable means having a limited movementrelatively to the engaging element, to enable the engaging element toshift in one direction independently of the operable means; a catch tonormally retain the engaging element in idle position; a drive meanscontrolled by the operable means to shift the engaging element toeffective position; and meansalso controlled by the operable means, torelease the catch when sufficient power is stored in the drive means toactuate the engaging element.

12. The combination with a traveling paper carriage; and a motor havinga shaft; of means to return the carriage towards the beginning of aline, including normallyseparated drive and driven members; a normallyidle engaging element to positively enforce the engagement of theseparable members; an operable member having a limited movementrelatively to the engaging element, to enable the engaging element toshift in one direction independently ofthe operable member; releasablemeans to normally retain the engaging element in idle position; drivemeans for the engaging element, such means interposed between theoperable member'and engaging element and controlled by the operablemember; and means controlled by the operable member to trip thereleasable retaining means when suflicient power is stored in the drivemeans to actuate the engaging element independently of the operable mem-13. The combination with a traveling paper carriage; and a motor havinga shaft; of means to return the carriage towards the beginning of aline, including normally-sepashifted in one direction.

' member adapted to restore rated drive and driven members; a normallyidle engaging element to positively enforce the engagement of theseparable members; an operable member having a limited movementrelatively to the engaging element. to enable the engaging element toshift in one direction independently of the operable member; releasablemeans to normally retain the engaging element in idle position: drivemeans for the engaging element. the power in which drive means isgradually increased by the actuation of the operable member in onedirection: and means controlled by the operable member to trip thereleasable retaining means when sufficient power is stored in the drivemeans. to actuate the engaging element independently of the operablemember.

14. The combination with a traveling paper carriage: and a motor: of 'adrive mechanismbetween the motor and the carriage. includingnormally-separated drive and driven members: a normally idle engagingelement to effect the engagement of the separable members: an actuatinglever con nected with the engaging element: a releasable catch tonormally maintain the actuating lever and engaging element in idleposition: a manually-operable member adapted to have a limited movementrelatively to the actuating lever: a spring to act upon the actuatinglever; the operable member adapted to store power in the spring. whenshifted in one direction independently of the actuating lever: meanscontrolled by the operable member. to release the catch subsequently tothe storage of power in the spring, to enable the spring to shift theengaging ele ment to effective position, the operable the actuatinglever and engaging element .to idle position and return the catch toeffective osition. when shifted in the opposite direction; and means toautomatically disconnect the separable members when the engaging elementrestores to idle ition.

15. The combination wit-h a traveling paper carriage; and a motor; ofdrive mechanism between the motor and carriage, includingnormally-separated drive and drix'en members; a normally idle engagingelement to effect engagement of the separable members; releasable meansnormally effective to lock the engaging element in idle position: amanually-operable means. including a trip link adapted to have a limitedmovement relatively to the engaging element, to prevent direct controlof the element by the trip link when the link is shifted in onedirection: drive means for the engaging element: means operated by thetrip link when the engaging element. to release the locking means andthereby enable the drive means to independently of shift the engagingelement to effective posi- .ed in the opposite direction.

17. The combination with a paper carriage; and a motor; mechanismbetween the motor and carriage. including normally-separated drive anddriven members; a normally idle engaging element to effect engagement ofthe separable members; 'manually-opera-ble means shiftable in oppositedirections, and having indirect control of the. engaging element whenshifted in one direction, and direct control of the element when shiftedin the opposite direction; a drive means'controlled by themanually-operable means, when shifted in one direction, to operatetheengaging element to its effective position, the manually-operable meanseffective, when shifted in the opposite-direction, to operate theengaging element to its ineffective position; and means to disengage theseparable members when the engaging element is ineffective.

18. The combination with a traveling paper carriage; and a motor; ofdrive mechanism between the motor and carriage, includingnormally-separated drive and driven members: a normally idle engagingelement to effect engagement of the separable members; manually-operablemeans shiftable in opposite directions, and having indirect control ofthe engaging element when shifted in one direction, and direct controlof the engaging element when shifted in the opposite direction; a drivemeans controlled by the manually-operable means. when shifted in onedirection, to operate the engaging element to its effective position.the manually-operable means effective. when shifted in the oppositedirection. to operate the engaging elementto its ineffective position;carriage-controlled means to shift the engaging element to itsineffective position: and means to disengage the separable members whenthe engaging element is ineffective.

19. The combination with a traveling paper carriage; and a motor; ofdrive traveling of drive 21. The combination with a" mechanism betweenthe motor and carriage,

including normally-separated drive and.

vthe engaging element; and trip means actuated'by the operable means totrip the detaining means and permit the drive means to shift theengaging element to efiective position; the operable means. adapted toshift the engaging element to ineffective position and restore thedetaining means to efiective position.

" 20. The combinationv with a traveling paper carriage; tabulating stopsmounted thereon; an abutment with which the stops respectively contact,to arrest the carriage in various positions in its path of travel; meansto draw the carriage in one direction; and a motor; ofcarriage-returnmechanism between the motorand carriage, including normally-separateddrive and driven members; a normally idle engaging element to edect theengagement of the separable members; manually-operable means shiftablein opposite'directions, and having indirect control of theengagingelement to shift the latter to effective position, whereby to engage theseparable members and cause the drive mechanism to return the carriagetowards the beginning of a line, the manually-operable means havingdirect control of the engaging element to disable the latter andinterrupt the return of the'carriage at any point in its return travel;and means to efiect the separation of the separable members when theengaging element is disabled. 4

traveling paper carriage; and a motor; of means to return the carriageto the beginning of a-line, including separable members; means todisengage and hold the separable. members normally separated; anengaging element to efiect the .connection of the separable members; aspring adapted to shift the engaging element to efl'ective position;operable means to store power in the spring; detaining means to'preventthe gradual operation of the engaging element; and means controlled bythe operable means to trip the detaining means after the storage ofpower in the spring, the operable means adapted for movement relativelyto the engaging element, to enable the operator to shift the engagingelement to idle position, and free one of the separable members to theaction of the disengaging means, to thereby interrupt the return travelof the carriage at any point in its path of return.

22. The combination with a traveling paper carriage; and a motor; ofmeans to connect the motor and paper carriage to return the carriagetowards the beginning of a line, including separable members; means tonormally disengage the separable members; an engaging element to effectthe connection of the clutch members;

a drive means to shift the engaging element to effective position;operable means to store power in the drive means, and having a looseconnection with the engaging element; the drive means normally adaptedto take up the lost motion in the loose connection, to enable theoperable means to shift ,the clutch-engaging element to ineifectiveposition; a detaining means to delay the operation of the engagingelement by its drive means; and trip means actuated by the operablemeans to release the detaining means.

23. The combination with a traveling paper carriage; and a motor; ofmeans to connect the motor and paper carriage to return the carriagetowards the beginning of a line including separable members; means tonormally disengage the separable mem-. bers; an engaging element toeffect the connection of the separable members; a drive means to shiftthe-engaging element to elfectiveposition'; operable means to storepower in the drive means, and having a loose connection with theengaging element; the drive means normally ada ted to take up the lostmotion in the loose connection, to enable the operable means to shiftthe engaging element to ineffective position; a catch to delay theoperation of the engaging element by its drive means; and a trip fingeractuated by the operable means to release the catch.

24. The combination with a traveling paper carriage; and a motor; ofmeans to connect the motor and carriage to return thecarriage towardsthebeginning of a line, including normally idle separable members; meanstending to disengage the separable members; an engaging element; drivemeans therefor; means operable in one direction to actuate the drivemeans, and in the opposite members; an engaging element; drive meanstherefor; and means operable in one direction to actuate the drivemeans, and in the opposite direction to shift the engaging element toineffective position. i

26. The combination with a traveling paper carriage; and a motor; ofmeans to connect the motor and paper carriage to return the papercarriage towards the beginning of a line, including normally idleseparable members; means to disengage the separable members; an engagingelement to effect the connection of the separable members; drive meanstherefor; means operable in one direction to actuate the drive means,and in the opposite direction to shift the engaging element toineffective position; detaining means to delay the actuation of theengaging element by the operable means; trip means actuated by theoperable means to release the detaining means; dual control means forthe operable means, at least one of which permits the operator torestore the engaging means to ineffective position and interrupt thereturn travel'of the carriage at any desired point; carriage feed means;tabulating stops; and an abutment with which the stops contact to arrestthe carriage at any desired point in its travel.

27. The combination with a traveling paper carriage; and a motor; ofmeans to connect the motor and paper carriage to return the paper carriae towards the be ginning of a line, inclu ing normally idle separablemembers; means to disengage the separable members; an engaging elementto effect the connection of the separable members; drive means therefor;means operable in one direction to actuate the drive means, and in theopposite direction to shift the engaging element to ineffectiveposition; de-

taining means to delay the actuation "of the engaging element by theoperable means; trip means actuated by the operable means to release thedetaining; means; dual control means for the operable means, at leastone of which permits the operator to restore the engaging means toineffective position and interrupt the return travel of the carriage atany desired point; carriage feed means; tabulating stops; and an'abutment with which the stops contact to arrest the carriage at anydesired point in its travel;

and carriage-controlled means to shift the engaging e ement to itsineffective position irrespective of the position of the operable means.

28. The combination with a traveling tabulating bar mounted in thecarria endwlse movement; means to limit t e ex-- a drive means to shiftthe engaging element to effective position; an operable means to controlthe drive means, and having a loose connection with the engaging elementto enable the operable means to shift the engaging element toineffective position; a trip arm connected with the engaging element;and means on the carriage arranged to contact the arm and shift theengaglng element to ineffective position as the carriage reaches thelimit of its return travel.

29. In a calculating machine, having a main drive shaft; the combinationwith a motor; means to connect the motor and main drive shaft; astarting key to control the operation of such connection; and atraveling paper carriage; of carriage-return mechanism therefor,including normallyseparated members; means, including an operablemember, to cause the engagement of the normally-separated members;actuating means for the operable member; and interlocking meanscontrolled by the starting key and the actuating means, respectively, toprevent concurrent action of the machine and of the carriage-returnmechanism.

30. The combination with a traveling paper carriage; feed means to drawthe carriage in one direction; and a motor; of means to restore thecarriage to the beginning of a line against the influence of the feedmeans, the carriage-restoring means including normally idle separablemembers through which the motor is connected to the carriage; means todisengage the separable members; an engaging element to effectconnection of the separable members; a link shiftab'le in oppositedirections and adapted for movement relatively to the engaging element;a drive spring controlled by the link when shifted in one direction, toactuate the engaging element to effective position; a detaining means todelay the actuation of the engaging element; and a trip means controlledby the link to release the detaining means subsequently to the storageof power in the drive spring, the engaging element being shiftable bythe link to its ineffective position at any point in the path of returnof the carriage; a for tent of such movement; tabulating stops on,thebar; an abutment with which the stops contact to arrest the carriage inany desired position; and a cushioning device connected to thetabulating bar and to the carriage, respectively, to cushion the shockdue to the contact of the stops with their abutment, when the returntravel of the carriage is interrupted by the disconnection of the clutchmembers.

31. The combination with a traveling paper carriage, having a platen anda motor;

of means to relcasably connect the motor and carriage to return thelatter towards the beginning of a line; and line space mechanism for theplaten, including a vibratory support; a line space pawl pivotallymounted thereon; a ratchet 0n the platen adapted for engagement by thepawl; a cam on the pawl; a control stud wiped by the cam, as the pawlvibrates with its support, to disengage the pawl from its ratchet, andto enable the pawl to engage its ratchet; stationary inclined face; andmeans on the support adapted to ride upon the face as the carriage;shifts in one direction or the other to vibrate the pawl support.

ARTHUR PENTEGQST.

